Roller-truck for printing-presses.



ROLLER TRUCK FUR PRINTING PRESSES.

Patented Sept. 3; 1918.

EMIL P. VALLEY, OF CHICAGO, ILLINOIS.

ROLLER-TRUCK FOR PRINTINGPRESSES.

Specification of Letters Patent.

Patented Sept. 3, 1918.

Application led August 8, 1917. Serial No. 185,096. j

To all whom t may concern .1

Be it lrnown that I, EMIL I). VALLEY, a citizen of the United States,and a resident of the city of Chicago, county of Cook, and State ofIllinois, have invented certain new and useful Improvements inRoller-Trucks for Printing-Presses, of which the following is aspecification.

My invention relates to improvements in roller trucks for printingpresses, and has for its object the provision of an improvedconstruction of this character by means of which the form rollers of anordinary printing press may be nicely and permanently adjusted to thetype.

The invention consists in the combinations and arrangements of partshereinafter described and claimed. Y

The invention will be best understood by reference to the accompanyingdrawings forming a part of this specification, and in which, V

Figure 1 is a view of one end of a form roller equipped with a truckembodying my invention, and I Fig. 2 is a sectional view of the same.

The preferred form of construction as illustrated in the drawingscomprises a sleeve 3 secured over each end of the ordinary shaft 4 ofthe ordinary form roller 5 of the press, said sleeve being secured inplace by means of a set screw 6. A bearing member 7 is adjustablysecured to each of the sleeves 3 by means of a set screw 8 as shown. Thebearing member 7 is stepped., being provided with a central bearingsurface 9 of largest diameter and bearing surfaces 10, 11, 12 and 13arranged alternately on opposite sides thereof and of successivelydecreasing diameters.

By this arrangement it will be observed that by longitudinally adjustingthe bearing member 7 on the corresponding sleeve 3 the different bearingsurfaces 9, 10, 11, 12 and 13 may be brought into position to run uponthe corresponding way 14 of the printing press 15 to nicely contact withthe type 16, and that when such adjustment is once made it becomespractically permanent. Also if desired, the bearing member 7 may bereversed on its sleeve to facilitate such adjustment. Owing to thestepped arrangement of the bearing surfaces with a central. bearingsurface of largest diameter and bearing surfaces on opposite sidesthereof and arranged alternately of successively decreasing diameters,comparatively deep shoulders are provided between adjacent bearingsurfaces on the same side and at the same time comparatively delicateadjustments permitted.

While I have illustrated and described the preferred form ofconstruction for carrying my invention into effect, this iscapalcomprising a bearing member adjustable longitudinally on the rolleraXis and provided with'a stepped bearing face affording bearing surfacesof different diameters, the

Acentral of said bearing faces having the greatest diameter and those oneach side successively alternately decreasing in diameter, substantiallyas described.

2. A roller truck for printing presses `comprising a sleeve securedabout the roller shaft; a bearing member adjustable longitudinally onsaid sleeve and provided with a stepped bearing face affording bearingsurfaces of dierent diameters, the central of said `bearing faces havingthe greatest diameter and those on each side successively alternatelydecreasing in diameter, substantially as described.

3. A roller truck for printing presses comprising a sleeve secured tothe roller axis; and a bearing member reversible and adjustablelongitudinally on said sleeve and provided with a stepped bearing faceaffording bearing surfaces of diii'erent diameters, the central of saidbearing faces having the greatestdiameter and those on each sidesuccessively alternately decreasing in diameter, substantially asdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

EMIL P. VALLEY.

Witnesses:

F. MALMGREN, JOSHUA R. H. Porrs.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

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